8909745 has 16 divisors (see below), whose sum is σ = 15352512. Its totient is φ = 4386240.

The previous prime is 8909737. The next prime is 8909749. The reversal of 8909745 is 5479098.

It is not a de Polignac number, because 8909745 - 2³ = 8909737 is a prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 8909697 and 8909706.

It is not an unprimeable number, because it can be changed into a prime (8909749) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22651 + ... + 23040.

It is an arithmetic number, because the mean of its divisors is an integer number (959532).

Almost surely, 2^8909745 is an apocalyptic number.

It is an amenable number.

8909745 is a deficient number, since it is larger than the sum of its proper divisors (6442767).

8909745 is a wasteful number, since it uses less digits than its factorization.

8909745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45712.

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 8909745 is about 2984.9195969071. The cubic root of 8909745 is about 207.3107191509.

The spelling of 8909745 in words is "eight million, nine hundred nine thousand, seven hundred forty-five".